Isn't this interesting... the one you're really looking for is the Rani, as played by Kate O'Mara! Hardly a "companion" of the Dcotor, this renegade Time Lady is devious, brilliant, determined, and often downright murderous. If you had your heart set on a bad girl, beware: they don't come any badder. Still, as long as you don't piss her off (and retain an ample life insurance policy), you could be in for a fascinating time.

whos that?
I think I would like
You, my friend, carry a torch for Zoe Herriot, as played by Wendy Padbury! This elfin brunette from the far-far-future has brains to spare and a zest for scholarly pursuits as well as adventure. Zoe has the exceedingly distracting habit of dressing in form-fitting catsuits, and she was into PVC before PVC was cool.
better
Fashion is FOR Victims...-LT.
..The men in black, thier lips are sealed...-BOC
- Even your sins are retail- John Stewart